The Impact of Casirivimab-Imdevimab Antibody Cocktail in Patients Amidst and Post COVID 19 Treatment: A Retro-Prospective Comparative Study in India

Monoclonal antibodies have gained attention in developing countries owing to its benefits portrayed by few clinical trial. However, no studies until now have been undergone in India. MATERIAL: Aretro - prospective comparative observational study was conducted in symptomatic COVID19 patients to evaluate the impact of Casirivimab and Imdevimab antibody cocktail in the high-risk population. Through an extensive data retrieval for 6 months, 152 samples were documented and sorted into test (Casirivimab and Imdevimab treated patients, n=79) and control (Non- Casirivimab and Imdevimab treated individuals, n=73) subsets. The research had two phases; first, estimation of mechanical ventilation and high flow oxygen requirement and mortality in samples amidst the treatment, and second was the post COVID19 patients' feedback through validated (Cronbach's alpha coefficient= 0.7) questionnaire that evaluated their health and vaccination status, and treatment satisfaction. OBSERVATION: We noticed lesser requisite for mechanical ventilation (6.3%; p<0.001), high flow oxygen (5.1%; p<0.001) and no death during Casirivimab and Imdevimab therapy. Meanwhile, non-vaccinated test groups were not on mechanical ventilation and those fully immunized seldom entailed high flow oxygen (test, 6.3%; control, 41.9%, p<0.01). On evaluating the post COVID19 status of each patient in the study, 90.1% of the test samples were healthy and 97.2% were satisfied with the treatment than those in control group. CONCLUSION: Casirivimab and Imdevimab regimen was clinically beneficial for high risk COVID19 patients than those treated without the antibody cocktail.